package com.tanhua.dubbo.api;


import cn.hutool.core.collection.CollUtil;
import com.tanhua.dubbo.utils.IdWorker;
import com.tanhua.dubbo.utils.TimeLineService;
import com.tanhua.model.mongo.Movement;
import com.tanhua.model.mongo.MovementTimeLine;
import com.tanhua.model.vo.PageResult;
import org.apache.dubbo.config.annotation.DubboService;
import org.bson.types.ObjectId;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.aggregation.Aggregation;
import org.springframework.data.mongodb.core.aggregation.AggregationResults;
import org.springframework.data.mongodb.core.aggregation.TypedAggregation;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;

import java.util.List;

@DubboService
public class MovementApiImpl implements MovementApi {

    @Autowired
    private MongoTemplate mongoTemplate;

    @Autowired
    private IdWorker idWorker;
    @Autowired
    private TimeLineService timeLineService;


    @Override
    public String publish(Movement movement) {
        try {
            //1. 保存动态数据
            movement.setPid(idWorker.getNextId("movement")); //设置pid
            movement.setCreated(System.currentTimeMillis());  //设置时间
            mongoTemplate.save(movement);
            //2、查询当前用户的好友数据
            /*Criteria criteria = Criteria.where("userId").is(movement.getUserId());
            Query query = Query.query(criteria);
            List<Friend> friends = mongoTemplate.find(query, Friend.class);//获取当前用户所有好友
            Thread.sleep(1000);
            //3、循环好友数据，构建时间线数据存入数据库
            for (Friend friend : friends) {
                MovementTimeLine timeLine = new MovementTimeLine();
                timeLine.setMovementId(movement.getId()); //设置动态id
                timeLine.setUserId(friend.getUserId()); //设置动态用户id
                timeLine.setFriendId(friend.getFriendId());//设置可见好友id
                timeLine.setCreated(System.currentTimeMillis());
                mongoTemplate.save(timeLine);
            }*/
            timeLineService.saveTimeLine(movement.getUserId(), movement.getId());
        } catch (Exception e) {
            //忽略事务处理
            e.printStackTrace();
        }
        return movement.getId().toHexString();


    }

    /**
     * 查询个人动态
     * @param userId
     * @param page
     * @param pagesize
     * @return
     */

    @Override
    public PageResult findByUserId(Long userId, Integer page, Integer pagesize) {
        Criteria criteria = Criteria.where("userId").is(userId).and("state").is(1);
        Query query = Query.query(criteria).skip((page - 1) * pagesize).limit(pagesize)
                .with(Sort.by(Sort.Order.desc("created")));
        List<Movement> movements = mongoTemplate.find(query, Movement.class);
        return new PageResult(page, pagesize, 0L, movements);
    }

    @Override
    /**
     * 查询当前用户好友发布的所有动态
     * @param friendId:当前操作用户id。
     */
    public List<Movement> findFriendMovements(Integer page, Integer pagesize, Long friendId) {
        //1、根据friendId查询时间线表
        Query query = Query.query(Criteria.where("friendId").is(friendId))
                .skip((page - 1) * pagesize).limit(pagesize).with(Sort.by(Sort.Order.desc("created")));
        List<MovementTimeLine> lineList = mongoTemplate.find(query, MovementTimeLine.class);
        //2、提取动态id列表
        List<ObjectId> list = CollUtil.getFieldValues(lineList, "movementId", ObjectId.class);
        //3、根据动态id查询动态详情
        Query movementQuery = Query.query(Criteria.where("id").in(list).and("state").is(1));
        return mongoTemplate.find(movementQuery, Movement.class);
    }

    //根据pid查询
    @Override
    public List<Movement> findMovementsByPids(List<Long> pids) {
        Query query = Query.query(Criteria.where("pid").in(pids));
        return mongoTemplate.find(query, Movement.class);
    }

    //随机查询多条数据
    @Override
    public List<Movement> randomMovements(Integer counts) {
        //1、创建统计对象，设置统计参数
        TypedAggregation aggregation = Aggregation.newAggregation(Movement.class, Aggregation.sample(counts));
        //2、调用mongoTemplate方法统计
        AggregationResults<Movement> results = mongoTemplate.aggregate(aggregation, Movement.class);
        //3、获取统计结果
        return results.getMappedResults();
    }

    @Override
    public Movement findById(String movementId) {
        return mongoTemplate.findById(movementId, Movement.class);
    }

    /**
     * 实现根据用户ID分页查询用户发布的动态列表方法
     * @param uid
     * @param state
     * @param page
     * @param pagesize
     * @return
     */
    @Override
    public PageResult findByUserId(Long uid, Integer state, Integer page, Integer pagesize) {
        Query query = new Query();
        if(uid != null) {
            query.addCriteria(Criteria.where("userId").is(uid));
        }
        if(state != null) {
            query.addCriteria(Criteria.where("state").is(state));
        }
        //查询总数
        long count = mongoTemplate.count(query, Movement.class);
        //设置分页参数
        query.with(Sort.by(Sort.Order.desc("created"))).limit(pagesize).skip((page -1) * pagesize);

        List<Movement> list = mongoTemplate.find(query, Movement.class);
        return new PageResult(page,pagesize,count,list);
    }

    /**
     * 动态审核
     * @param movementId
     * @param state
     */

    @Override
    public void update(String movementId, int state) {
        Query query = Query.query(Criteria.where("id").in(new ObjectId(movementId)));
        Update update = Update.update("state", state);
        mongoTemplate.updateFirst(query, update, Movement.class);
    }


}